JP2585478Y2 - Tape position control device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus applicable to a video tape recorder, a digital audio tape recorder and the like, and more particularly to a tape position regulating apparatus for guiding the magnetic tape.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional tape position regulating apparatus implemented in a magnetic recording / reproducing apparatus has a frame 10 on which a support shaft portion 12 of a guide roller 11 is mounted, and the guide roller 11 has a substantially predetermined position. The tape is adjusted until the tape running is good by moving it slightly in the directions indicated by arrows A and B. Then, the fixing screw 13 is screwed in the direction indicated by arrow C. 11 to fix the fixing screw 13 to the fixing screw 13
4 was applied.

[0003]

However, in the above-described conventional tape position regulating device, the height of the guide roller 11 is adjusted and the fixing screw 13 is tightened until the tape travels in a good state. In such a case, the guide roller 11 is moved up and down, especially downward by the clearance and the tightening torque between the support shaft portion 12 of the guide roller 11 and the hole of the frame 10, and the tape running is adjusted to a good state. This caused a gap and required re-adjustment.

[0004]

According to the present invention, a frame is provided with:
Guide roller support shaft that regulates magnetic tape running deviation
Part that is to be inserted
And a fixing screw corresponding to the female screw
Into the above female screw, and by the pressing force of the fixing screw,
To fix the support shaft of the guide roller inserted in the insertion hole
In the tape position regulating device, the fixing screw
The surface of the insertion part into the female screw is made of an elastic resin
It is what was coated with.

[0005]

According to the tape position regulating device of the present invention, when the support shaft of the guide roller is tightened from the side or oblique direction with a fixing screw coated on the surface with a resin having elasticity, the resin is deformed, and the guide roller is deformed. The support shaft is pressed against the hole of the frame with a constant pressure and fixed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a tape position regulating device showing an embodiment of the present invention. A frame 1 is a rigid body made of metal and has a hole 4 into which a support shaft 3 of a guide roller 2 can be inserted. 4 is provided with a female screw 4a at the tip thereof, and a female screw 6 for screwing the fixing screw 5 at an angle of approximately 45 degrees with respect to the center axis of the support shaft portion 3 is provided so as to penetrate to the hole 4. ing.

The guide roller 2 has flanges 2b and 2c provided above and below a magnetic tape contact surface 2a, respectively.
The vertical movement of the magnetic tape is regulated by the flanges 2b. On the other hand, a male screw 3a that is screwed into a female screw 4a provided in the hole 4 of the frame 1 is formed at the tip of the support shaft 3 of the guide roller 2. The fixing screw 5 is shown in FIG.
As shown in FIG. 5, a male screw 5a is provided, and the surface of the male screw 5a is coated with an elastic resin portion 5b of, for example, nylon. The support shaft 3 of the guide roller 2 is inserted into the hole 4 of the frame 1 in the above state, and the guide roller 2 is screwed and adjusted to move in the direction of the arrow A or B so that the running state of the magnetic tape is improved. . After that, the fixing screw 5 is screwed into the female screw 6 of the frame 1 in the direction of arrow C,
The support shaft 3 is tightened with a fixed torque so as to be crimped by the resin portion 5b at the tip of the fixing screw 5. At this time, the resin portion 5b is deformed, and the support shaft portion 3 of the guide roller 2 is pressed against the hole 4 of the frame 1 with a constant pressure.
Rotation torque can be stabilized.

Further, since the fixing screw 5 is coated with a resin to form the resin portion 5b, when the screw is screwed in, a resin having elasticity enters a gap between the female screw 6 of the frame 1 and the fixing screw 5, and the fixing screw 5 is fixed. 5 stops loosening. The surface of the female screw 6 of the frame 1 may be coated with a resin.

The tape position regulating device constructed as described above is used as a guide roller 2 on a loading post for drawing out a magnetic tape in a video tape recorder, a digital audio tape recorder or the like as shown in FIG. In this manner, the frame 1 itself is not moved, but can be applied to a fixed guide roller to which the frame is fixed. Reference numeral 7 denotes a rotating drum provided with a magnetic head.

[0010]

According to the tape position regulating device of the present invention, the guide roller 2 is vertically inserted into the frame 1 and the support shaft 3 of the guide roller 2 is coated with a resin having elasticity from the side of the frame 1. When the fixing screw 5 is tightened, the resin portion 5b is deformed, and the support shaft portion 3 of the guide roller 2 is pressed against the hole 4 of the frame 1 at a constant pressure. Since the rotating torque can be stabilized, the shape of the frame
Without using screws or special screws.
Use the fixing screw or frame that was
Guide when fixing the support shaft of the guide roller
Changes in the height of the roller and biting of the fixing screw
Damage to the support shaft of the guide roller
Can be prevented. Also, if went tightening the fixing screw 5, a resin having elasticity into a gap between the fixing screw 5 and the female screw 6 of the frame 1 is input because, of fixing screws
Locking can be performed simultaneously .

Therefore, after adjusting the height of the guide roller, it is not necessary to retighten the guide roller with the fixing screw, the rotational torque of the guide roller is kept constant, and the adjustment efficiency can be improved without loosening the fixing screw.

[Brief description of the drawings]

FIG. 1 is a sectional view of a tape position regulating device showing an embodiment of the present invention.

FIG. 2 is a sectional view of a fixing screw used in the tape position regulating device of the present invention.

FIG. 3 is a partial perspective view of a magnetic recording / reproducing apparatus implementing the tape position regulating device of the present invention.

FIG. 4 is a sectional view of a conventional tape position regulating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2 Guide roller 3 Support shaft part 5 Fixing screw 5b Resin part 14 Adhesive

Claims (1)

(57) [Scope of request for utility model registration] (1) A frame is provided on a frame to prevent a running deviation of a magnetic tape.
An insertion hole into which the support shaft of the guide roller to be controlled is inserted;
Forming a female screw extending obliquely to the insertion hole, screwing a fixing screw corresponding to the female screw to the female screw,
It was inserted into the insertion hole by the pressing force of the fixing screw.
Tape position regulating device that fixes the support shaft of the guide roller
In the surface of the insertion portion of the fixing screw into the female screw
Characterized by being coated with a resin having elasticity .